Patent · US Expired

Aqueous dispersion of fluoropolymers of varying particle size

US6566452B1 · kind B1 · utility

11Cited by

6References

26Claims

0Family size

Assignee

Dyneon GmbH · DE

Inventors

Hermann Bladel · Emmerting, DE
Gernot Lohr · Altötting, DE
Gerd Grossmann · Burgkirchen an der Alz, DE

Key dates

Filing date	May 24, 2001
Grant date	May 20, 2003
Priority date	—
Expiry date	May 24, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/02
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Aqueous dispersions of fluoropolymers obtained by emulsion polymerization and containing at least one fluoropolymer A) with an average particle size (number-average) of at least 200 nm and at least one fluoropolymer B) with an average particle size (number-average) of not more than 100 nm, one of components A) and B) being a thermoplastic and the other component not being processable from the melt, and the entire dispersion having a non-monomodal number distribution of particle diameter, are suitable for saturating, impregnating surfaces, for example of fibers or sheet-like articles made from fibers or porous materials, in particular for coating glass-fiber fabrics as well as for formulating metal-coating systems.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.